R.S.
I went through the same thing and my doctor told me that I could start sleep training at 4mths. I never could envision my son going to sleep on his own..impossible. After about 1 week of sleep training he started being able to get himself to sleep...what a RELIEF!!! I did the 5 min, then 10, then 15 and so on. The most he cried was about 35 minutes, which was hard but well worth it. He is 15mths now and a very happy boy who sleeps wonderfully! Good luck!